The BioShock 2 Listing on Steam offers system specifications for 2K Games' upcoming shooter sequel, which feature an outline of the game's use of DRM and how Games for Windows is required to play the game (thanks nin via Shacknews). They do not list activation limitations. They list a "15 machine activation limit," reminiscent of the the original BioShock which had lower number of allowed installations until they were removed, and the game will use Games for Windows LIVE as well as Sony DADC SecuROM. Word is: "Initial installation requires one-time internet connection; Ability to save game, earn achievements, receive title updates and online play requires log-in to Games for Windows LIVE; software installations required including Microsoft Visual C++2008 Runtime Libraries, Games for Windows LIVE client, Games for Windows LIVE Client Patch, Sony DADC SecuROM, Microsoft DirectX." The system specs follow.